Bump lodash from 4.17.11 to 4.17.15

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.11 to 4.17.15.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.11...4.17.15)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

yarn.lock

@@ -2490,7 +2490,7 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.15, graceful-fs@^4.1.2:
   dependencies:
     "@babel/preset-env" "7.4.5"
     babel-eslint "9.0.0"
-    eslint-config-graylog "file:../../../.cache/yarn/v4/npm-graylog-web-plugin-3.1.1-SNAPSHOT-d86b9bdb-6a9b-4032-b0fa-97caf7f20f4c-1565946286787/node_modules/eslint-config-graylog"
+    eslint-config-graylog "file:../graylog2-server/graylog2-web-interface/packages/eslint-config-graylog"
     html-webpack-plugin "3.2.0"
     javascript-natural-sort "0.7.1"
     jquery "3.4.1"
@@ -3138,12 +3138,7 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/lodash.union/-/lodash.union-4.6.0.tgz#48bb5088409f16f1821666641c44dd1aaae3cd88"
   integrity sha1-SLtQiECfFvGCFmZkHETdGqrjzYg=
 
-lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.17.5:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
-  integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
-
-lodash@^4.17.13, lodash@^4.17.14, lodash@^4.17.15:
+lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.13, lodash@^4.17.14, lodash@^4.17.15, lodash@^4.17.3, lodash@^4.17.4, lodash@^4.17.5:
   version "4.17.15"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
   integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==